Preventing Roadblocks: PRI Keeps Illinois on the Straight and Narrow Jan 31, 2024 8:00 am by Rosalind EssigPrairie Research InstituteArchaeological SurveyGeological Survey Share on Facebook Tweet Email Images With the help of Prairie Research Institute scientists, transportation agencies are building Illinois roads in compliance with state and federal regulations, while preserving Illinois’ physical, biological, natural, and cultural resources. Share on Facebook Tweet Email